Blood pressure is defined as the product of :

Blood pressure is defined as the product of:-

A. Systolic pressure X pulse
B. Diastolic pressure X Pulse rate
C. Pulse pressure X pulse rate
D. Cardiac output X peripheral resistance

Ans. D 

The overall blood flow in circulation of adult at rest is about 5 liter / min which equals to cardiac output because it is the amount of blood pumped by heart per unit time. 

Blood pressure =	Cardiac output X peripheral resistance or Blood flow X resistance (R)
Venous return =	MSFP – RAP                MSFP = mean systemic filling pressure        RVR                       RAP   =  Right atrial pressure                                       RVR   =  Resistance to venous return